Hi, cosmic mystery buffs. As reported in the January 7th issue of NewScientist, pgs 31 – 33, a contretemps seems to be brewing about the dark matter candidacy of the weakly interacting massive particle (WIMP). On the one hand, dark matter, or some alternative, is needed to explain the gravitational effects in and between galaxies, among other things. On the other hand, the existence of any type WIMP has almost been excluded, due to recent LHC mass measurements, at CERN, and to the failure to account for small-scale structure in the universe- e.g., the dearth of galactic dwarves. One might say that the WIMP is becoming a less than enlightening dark matter contender.
Enter Dan Hooper, of Fermilab, who thinks that dwarf galaxies have not been sighted because they could be entirely composed of dark matter, in the form of low-mass WIMPs, which have a decay signature of GAMMA RAYS (even though the Fermi space telescope has failed to locate them in any nearby dwarf galaxy). Well, it may be that WIMPs have already been detected in the halo of the Milky Way galaxy (whether they constitute the entire halo, or are only embedded within it).
In my last blog, serial halos, I set forth the principle, which I call the Modified Archimedes Principle (MAP), that “a massive body, which is immersed in space, displaces a volume of that space, centered on such body, and that such volume contains an amount of vacuum energy, which is not only equal to the mass of such body, but also varies as a function of the distance from such body.” One of the ramifications of this principle is that a focal mass not only induces the attractive gravitational force, it also induces a repellent displacement force, which is equal in strength to, but propagates in opposition to (1800), the gravitational force, so that most of the surrounding vacuum energy is gravitodisplaced to a distant torus (halo), and very little remains near the displacing body. It is not only likely that a massive WIMP would be gravitationally bound within such a mass equivalent halo, it is also likely that the mass equivalence of that halo displaces a secondary halo, which is equal in energy to, but much more diffuse than, the displacing (primary) halo.
The blog goes on to propose that recent data from the Fermi, Planck, and Sloan surveys indicate that the Milky Way is surrounded by an outer halo of microwaves, which encloses an inner halo of GAMMA RAYS. It may be that Dan Hooper is correct in assuming that WIMP decay produces gamma rays. If so, such energy would be absorbed by the ambient dust of the outer halo, and be reradiated as microwaves.
To learn more about another WIMP candidate, which may be the source of ultra-high energy atmospheric cosmic rays, and which I call the limboson, you are invited to contact me, at email@example.com